Helix P 8W Precision

Power handling RMS / Max 300 / 600 Watts
Impedance 4 Ohms
Voice coil diameter 50.8 mm
Voice coil winding height 18 mm
Max. linear excursion +/- 5 mm
Cone area 194 cm²
Moving mass 62 g
DC resistance 3.2 Ohms
Resonance frequency 32 Hz
Mechanical Q factor 3.44
Electrical Q factor 0.25
Total Q factor 0.23
Equivalent air volume 19.9 L
Voice coil inductance 0.96 mH
Force factor 12.7 Tm
Efficiency 1 W / 1 m 86 dB
Outer diameter 209 mm / 8.23“
Cutout diameter 189 mm / 7.44“
Mounting depth 115.5 mm / 4.55“
  
Recommended enclosure 
Ported box 
Vented net volume 16 L
Port diameter 7 cm
Port area: 38 cm²
Port length 22 cm
Port tuning frequency 48 Hz